Kehayov, I., Nakov, V., Kitov, B., Zhelyazkov, H., Spiriev, T. (2019) Interhemispheric transcallosal transforaminal approach and microscopic third ventriculostomy for intraventricular cranio-pharyngioma associated with asymmetric hydrocephalus: case report and literature review, Plovdiv: 143-147,.